By selling a picture for $216,000 an antique dealer make a profit of $172,000. Find the cost price and the profit percentage​

The correct answers would be (2,-2) and (-1, 11) so a and d.

In order to find this fill in x with the first number in the ordered pair. For example 3x = 3 x 2. This gives you 6 then subtract 8 from 6. (6-8). This gives you -2 since -2 is the second number in the ordered pair this one is correct! Good luck and have a blessed day!!

Answer:

26

28

29

Step-by-step explanation:

\(m = a + 20\)

Anywhere you see the letter a, you'll plug in the given a number.

The first one is 6, meaning

\(m = 6 + 20 = 26\)

Then we do the same for the others.

Answer:

x=10 and y=4

Im not sure if this is correct but I looked it up and it said it was right

Answer:

(if you're looking for intercepts then: x = 10, y = -4)

Step-by-step explanation:

\(\sf{2x - 5y = 20\)

\(\sf{Finding~x:\)

\(2x - 5y = 20\)

     \(+ 5y = + 5y\)

↪ 2x = 5y + 20

\(\frac{2x}{2} = \frac{5y}{2} + \frac{20}{2}\)

\(\sf{Finding~y:}\)

\(2x - 5y = 20\)

\(-2x~ = ~~~~-2x\)

↪ -5y = -2x + 20

\(\frac{-5y}{-5} = \frac{-2x}{-5} + \frac{20}{-5}\)

--------------------

Hope this helps!

Answer:

52

Step-by-step explanation:

The person who drink more water is Troy and he drinks 0.3 L more than Whitney

It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.

To solve this problem, we have to do the conversion of units with the given information:

Information about the problem:

By converting the unit from mL to L, we have:

1500 mL * (1 L / 1000 mL ) = 1.5 L

Comparing the volume of water that Whitney and Troy drink we have:

1.8 L > 1.5 L

Troy > Whitney

Troy drinks more water than Whitney

Calculating how much water Troy drinks more, we get:

Volume difference = Troy - Whitney

Volume difference = 1.8 L - 1.5 L

Volume difference = 0.3 L

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Answer:

second one

Step-by-step explanation:

it is the second one , it has three expression starts with 5

when n=0 :2n+5=2(0)+5=5

n=1 : 2n+5=7

n=2: 2n+5=4+5=9

n=3: 2n+5=11

Answer: B

Step-by-step explanation:

Answer:

look at the screenshot

Step-by-step explanation:

There are 62,352 five-digit numbers that have at least one digit occurring more than once.

To determine the number of five-digit numbers that have at least one digit occurring more than once, we can use the principle of inclusion-exclusion.

Step 1: Calculate the total number of five-digit numbers.

Since the first digit cannot be zero, we have 9 choices (1-9) for the first digit. The remaining four digits can be any of the ten digits (0-9). Therefore, the total number of five-digit numbers is 9 * 10^4 = 90,000.

Step 2: Calculate the number of five-digit numbers with no repeated digits.

For the first digit, we have 9 choices (1-9). For the second digit, we have 9 choices (excluding the digit chosen for the first digit). For the third, fourth, and fifth digits, we have 8, 7, and 6 choices, respectively. Therefore, the number of five-digit numbers with no repeated digits is 9 * 9 * 8 * 7 * 6 = 27,648.

Step 3: Calculate the number of five-digit numbers with at least one repeated digit.

Using the principle of inclusion-exclusion, we can subtract the number of five-digit numbers with no repeated digits from the total number of five-digit numbers:

Number of five-digit numbers with at least one repeated digit = Total number of five-digit numbers - Number of five-digit numbers with no repeated digits

                                                              = 90,000 - 27,648

                                                              = 62,352

Therefore, there are 62,352 five-digit numbers that have at least one digit occurring more than once.

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Answer:

6.28

Step-by-step explanation:

Answer:

The answer is b

Step-by-step explanation:

The distance traveled by the passenger train and the cattle train is equal to the total distance between them, which is 960 miles. Let x be the time (in hours) traveled by the passenger train and cattle train. Then, the equation that represents this situation is:

55x + 65x = 960

Simplifying the left-hand side of the equation, we get:

120x = 960

Dividing both sides by 120, we get:

x = 8

Therefore, the correct equation is:

B - 65x - 55x = 960

Answer:

a = 38 degree

b = 54 degree

c = 54 degree

Step-by-step explanation:

a = 180 - 142 = 38 ( angle on a straight line is equal to 180)

To determine the value of b, we have to find the other missing angle in the triangle.

the value of the missing angle is 38

Alternate angles are equal. the missing angle is alternate to angle b which has a value of 38

b = 180 - (38 + 88) = 54

c = 54

The coordinates of point T exists (0,5) and the midpoint of ST is (5,-2) then the coordinates of point T is S(10, -9).

Use midpoint formula and assume S(x, y):

(0 + x)/2 = 5

⇒ x / 2 = 5

⇒ x = 10

(5 + y)/2 = -2

⇒ 5 + y = -4

⇒ y = -4 - 5

⇒ y = -9

The complete question is:

The coordinates of point T are (0,5). The midpoint of ST is (5,-2). Find the coordinates of point S.​

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Answer:

w = 8

Step-by-step explanation:

4w+6=38

subtract 6 from each side of the equation:

4w = 32

divide both sides by 4:

w = 8

Answer:

4w+6=38

4w=38-6

4w=32

w=32/4

w=8

For an ordered pairs to represent a function, It should not show one-to-many relation in the pairs. The answer is  {(-4, 6), (-1, 5), (3, −5), (9,6)} represents a function.

A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output. Each function has a range, codomain, and domain.

The entire range of independent variable values is the domain of a function.

The set of all potential values that the function will return when the domain is provided as input is the definition of range.

{(-1,-8), (-7, -9), (-1,-6), (0, -7)} in this option, -1 is mapped to both -8 and -6, Which shows one-to-many relation. So, It is not a function.

{(2,7), (4,4), (2, 3), (9, -1)} in this option, 2 is mapped to both 7 and 3, Which shows one-to-many relation. So, It is not a function.

{(-4,-4), (-4, 9), (6, -2), (-9,-6)}  in this option, -4 is mapped to both -4 and 9, Which shows one-to-many relation. So, It is not a function.

{(-4, 6), (-1, 5), (3, −5), (9,6)} in this option, There are no one-to-many relations. So, It is a function.

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For an ordered pairs to represent a function, It should not show one-to-many relation in the pairs. The answer is {(-4, 6), (-1, 5), (3, −5), (9,6)} represents a function.

What is a function?

A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output. Each function has a range, codomain, and domain.

What are domain and range?

The entire range of independent variable values is the domain of a function.

The set of all potential values that the function will return when the domain is provided as input is the definition of range.

{(-1,-8), (-7, -9), (-1,-6), (0, -7)} in this option, -1 is mapped to both -8 and -6, Which shows one-to-many relation. So, It is not a function.

{(2,7), (4,4), (2, 3), (9, -1)} in this option, 2 is mapped to both 7 and 3, Which shows one-to-many relation. So, It is not a function.

{(-4,-4), (-4, 9), (6, -2), (-9,-6)}  in this option, -4 is mapped to both -4 and 9, Which shows one-to-many relation. So, It is not a function.

{(-4, 6), (-1, 5), (3, −5), (9,6)} in this option, There are no one-to-many relations. So, It is a function.

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Answer:

The probability of choosing a red shirt is 3/10, or 30%

Step-by-step explanation:

Since there are 10 total shirts and 3 or them are red, your chances of picking out a red shirt is 3/10 which also equals 30%, hope this helps!

Answer:

x=8 y=4

Step-by-step explanation:

eliminate x: make x of two equation equal to each other

2(-3x+9y=12) : -6x+18y=24 ___[1]

-3(2x-8y=-16) : -6x+24y=48 ___[2]

[2]-[1]= 6y=24

substitute y to any equation;

2x-8y=-16

2x-8(4)= -16

2x= -16+32

2x= 16

Answer:

x=14 and y=6

Step-by-step explanation:

-3x+9y=12.............(i)×2

2x-8y=-16..............(ii)×3

Multiplying equation (i) by 2 and equation (ii) by 3 and adding (i) and (ii)

-6x+18y=12

6x-24y=-48

-----------------

0-6y=-36

or, -6y=-36

So,y=6

From (i)

-3x+9y=12

or,-3x+9×6=12

or,-3x+54=12

or,-3x=12-54

or,-3x=-42

So,x=14

The answer to the question is 'False.'

Raw scores that have been mathematically transformed to have a designated mean and standard deviation are called standardized scores.

Standardized scores are scores that have a mean of 0 and a standard deviation of 1. This means that all standardized scores are expressed in standard deviation units above or below the mean. By using standardized scores, we can compare scores from different tests or distributions that may have different units of measurement or different means and standard deviations. Standard scores are represented by z-scores. Z-scores represent the number of standard deviations from the mean that a particular score falls. Z-scores help in comparing different scores on different scales and determine where a particular score stands in relation to the rest of the scores. A z-score of 0 indicates that the score is at the mean, while a positive z-score indicates that the score is above the mean and a negative z-score indicates that the score is below the mean.

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Answer:

Step-by-step explanation:

Slope formula= rise over run, or y2-y1 over x2-x1

y2=-4 y1=-18 x2=-7 x1=-7

-4-(-18)/-7-(7)

-22/-14 negative

Answer:

7/11

Step-by-step explanation:

the slope is positive. tell me what happens

Answer:

the probibiltiy that your roll 3 is 1/6  and 5 is 1/6 that is sepreate if its both together it is i belive 2/6

Step-by-step explanation:

Among these expressions, (4+1)x(12-6) has a total value of 30.

To determine which expression has a total value of 30, let's evaluate each expression one by one:

4+1x12-6

Following the order of operations (PEMDAS/BODMAS), we first do the multiplication:

4 + (1x12) - 6 = 4 + 12 - 6

Now, we do the addition and subtraction from left to right:

16 - 6 = 10

(4+1x12-6)

This expression has the same operations as the first one, so its total value is also 10.

(4+1)x(12-6)

First, we evaluate the expressions within the parentheses:

(5)x(6)

Now, we do the multiplication:

5 x 6 = 30

(4+1)x12-6

First, we evaluate the expression within the parentheses:

(5)x12 - 6

Now, we do the multiplication:

60 - 6

Finally, we do the subtraction:

54
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the curve described by the equation r^2 = 5 represents a circle with a radius of √5 centered at the origin in the Cartesian coordinate system.

To find the Cartesian equation for the curve r^2 = 5, we can rewrite it in terms of x and y coordinates. The polar coordinates (r, θ) can be converted to Cartesian coordinates (x, y) using the formulas x = r * cos(θ) and y = r * sin(θ).

Substituting the equation r^2 = 5 into these formulas, we have x = √5 * cos(θ) and y = √5 * sin(θ). Simplifying further, we get x^2 + y^2 = 5, which is the Cartesian equation of a circle with a radius of √5 centered at the origin (0, 0).

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Answer:

2

Step-by-step explanation:

John had 10 and he gave Janet 8, which means that he remained with 2

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Answer:  1 liter of milk

Explanation:

10 x .1 = 1

I hope this helped!

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Answer: 22.86

Step-by-step explanation:

Answer: 10/15 or a 66.67%

Step-by-step explanation:

The expression that is equivalent to the given expression is 3⁶/7¹⁵

From the question, we are to determine the expression that is equivalent to the given expression

The given expression is

\(\left(\frac{7^{-3} }{3^{-2} \times 7^{2}} \right)^{3}\)

Simplifying

\(\left(\frac{7^{-3} }{3^{-2} \times 7^{2}} \right)^{3}\)

\(\left(\frac{7^{-3 \times 3} }{3^{-2 \times 3} \times 7^{2 \times 3}} \right)\)

\(\left(\frac{7^{-9} }{3^{-6} \times 7^{6}} \right)\)

= \(\left( 7^{-9} \times \frac{1}{3^{-6}} \times \frac{1 }{7^{6}} \right)\)

= \(\left( \frac{1}{7^{9} } \times 3^{6} \times \frac{1 }{7^{6}} \right)\)

= \(\left(\frac{3^{6} }{7^{9} \times 7^{6}} \right)\)

= \(\frac{3^{6} }{7^{9+6}}\)

= \(\frac{3^{6} }{7^{15}}\)

Hence, the expression that is equivalent to the given expression is 3⁶/7¹⁵

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Answer:

500

Step-by-step explanation:

The 5 means 500. The whole number is read three thousand-five hundred-ninety

Answer:

they are

Step-by-step explanation:

the simplest form 8/18 is 4/9

Using the Central Limit Theorem, it is found that the correct option regarding the standard error of the mean is given by:

c. reduce the standard error of the mean to approximately 70% of its current value.

By the Central Limit Theorem, the sampling distribution of sample means of size n has standard error \(s = \frac{\sigma}{\sqrt{n}}\).

Doubling n, we have that:

\(s_d = \frac{\sigma}{\sqrt{2n}} = \frac{1}{\sqrt{2}}\left(\frac{\sigma}{\sqrt{n}}\right) = 0.7\left(\frac{\sigma}{\sqrt{n}}\right) = 0.7s\)

Hence option C is correct.

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